#!/usr/bin/env python
# coding: utf-8

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ls


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import nbformat
nb = nbformat.read('demo_maxwell-eigenvalues.ipynb', as_version=4)
for cell in nb.cells:
    print(cell.cell_type)
    print('    %s...' % cell.source.splitlines()[0])


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cell3 = nb.cells[3]
cell3


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cell3.metadata.attributes.classes


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cell1 = nb.cells[1]


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new_source = '\n'.join(['```', cell1.source, '````'])
new_cell = nbformat.v4.new_markdown_cell(new_source)
nb.cells[1] = new_cell
new_cell


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nbformat.write(nb, 'demo_maxwell-eigenvalues.ipynb')


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md = 


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nbformat.v4.new_markdown_cell('some markdown')


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